How to get people to stop coughing at night and sleep...Eucalyptus oil...I would recommend the Vicks baby rub as it has the proper ratio of essential oils with lavender and rosemary which are also helpful, but if you only have Eucalyptus oil dilute it with a carrier oil, olive, almond or even a little A&D ointment. Three to four drops per Tbps oil for a toddler and five to six for a small child. Lavender is the only safe “neat” application for children. It works wonders on bug bites!